it  FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

And there's why I love this forum  Learned to drive in 2011.
Bought a Micra - great little car
"Upgraded" to Kia Sportage - hated it
Proper upgrade to FL2 TD4 GS 60 reg Facelift - tailgate paint issues, fuel gauge rewire, transfer box failure at 36k miles, clutch at 60k
Reconditioned diff at 70k ish
Sold at 84k and now on a DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental

Hi, for the rear 12V power outlet if its no working first check the fuse which is located in boot ( 15 FA6 ) if its still not working change the power outlet its very cheap available on ebay, amazon 3-5 pound and very easy to install plug n play. and if you are using only for charging mobile choose the usb socket instead of power outlet and usb plug .

Great info on this thread. Boot not working, and only one of the two front ones.

Failing that i have 3 months warranty.

I have the same problem. Both fuses seem to be OK, yet there is no power to either the cigarette lighter socket in the boot or the rear of the 2 between the seats

Check for corrosion on the relevant fuse, or replace it if not done already, as sometimes a fuse looks ok but isn't. 2009 Rimini Red SE TD4. Soon to be sold.
Hyundai Ionic 5 Ultimate on order.
Gone. 2006 Tonga Green i6 HSE.

When my boot socket stopped working I somehow confused myself and missed changing the correct fuse.

However I discovered this thread which helped me understand how the fusebox worked (and how fragile it could be)

https://www.freel2.com/forum/topic34833.html?highlight=boot+12v

Mine was only a fuse, so my advice would be double check that you have the right fuse, FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 76k+ miles) (MY2015)

Checked the fuses in the boot and when I removed and replaced FA6, the socket started working again!!!

The bad news is that I tried that with FB10 for the boot socket and still no power getting to the socket. 12V at the fuse, so maybe a faulty socket?